PST6100.100-L Bosch Rexroth Indramat
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MPN: 1070079208
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The Bosch Rexroth Indramat PST6100.100-L is a thyristor power unit from the PST Thyristor Power Units series with a nominal system current of 130 Amps. The unit operates on a control supply voltage of 24 V DC, is protected to IP20 standards, and uses air cooling with a maximum transformer power of 76 kVA. It features integrated temperature monitoring, MOV overvoltage protection, and operates at line frequencies of 50 or 60 Hz.
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Product Description:
The PST6100.100-L belongs to the PST Thyristor Power Units series produced by Bosch Rexroth Indramat. As a thyristor-based power stage, it gates line voltage into transformer primaries so resistance welding, induction heating, and similar processes can modulate energy precisely. The unit is installed in automation cabinets where it serves as the interface between the plant's three-phase supply and downstream loads, allowing current to be controlled through a low-voltage command circuit. This arrangement allows the connected process to receive repeatable bursts of power without switching the full supply directly through the control electronics.
The power section is energized from a control supply of 24 V DC, and the main output path can conduct up to 130 A of nominal system current during steady operation. It synchronizes its firing pulses to networks running at 50/60 Hz, and matching to downstream isolation equipment is possible because the transformer rating reaches 76 kVA. That timing helps keep power delivery consistent on either common industrial line frequency. Protection against finger contact and solid objects down to 12.5 mm is provided by the IP20 enclosure, while air cooling removes internal heat from the power stage. Installation is permitted up to 2000 m above sea level, and at least 100 mm of clearance must be left above and below the heat sink for ventilation.
The firing circuit operates on a 50 % duty cycle, meaning the conduction and non-conduction intervals are equal when the command is at full power. The assembly remains functional at ambient temperatures up to 55 °C, and integrated temperature monitoring trips the unit if the heat sink temperature rises too far. Cabinet heating remains manageable because basic loss does not exceed 70 W. Surge events on the mains are clamped by a MOV, and installation accommodates cable lugs up to 50 mm² while keeping the cooling path unobstructed. Because the protection and cooling functions are built into the unit, it can be mounted as a dedicated power stage within a larger process control cabinet.
Frequently Asked Questions about PST6100.100-L:
Q: What is the nominal system current supported by the PST6100.100-L unit?
A: The PST6100.100-L handles a nominal system current of 130 A, supporting large electrical loads.
Q: What type of overvoltage protection does the PST6100.100-L offer?
A: This power unit provides overvoltage protection through a metal oxide varistor (MOV).
Q: What control voltage is required for the PST6100.100-L thyristor power unit?
A: The PST6100.100-L operates with a control supply voltage of 24 V DC.
Q: What cooling method does the PST6100.100-L thyristor power unit utilize?
A: The unit is designed for air cooling, ensuring temperature regulation during operation.
Q: What is the maximum installation altitude for the PST6100.100-L?
A: The PST6100.100-L can be installed at altitudes up to 2000 meters above sea level.
